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Second Measles Case Confirmed in Cook County: Health Alert

9/17/2025

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Summary

Story summary

A second measles case has been confirmed in suburban Cook County, Illinois, involving an unvaccinated 4-year-old who likely contracted the virus during international travel.
The child was at O'Hare International Airport's Terminal 5 on September 11 from 7:30 a.m. to 11 a.m.
Health officials are notifying potentially exposed individuals and advising them to check their vaccination status.
Measles symptoms, including rash, high fever, cough, and runny nose, can appear up to 21 days after exposure.
The MMR vaccine is 97% effective and can be given after exposure; free vaccines are available through the Cook County Department of Public Health.

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Story summary

A second measles case has been confirmed in suburban Cook County, Illinois, involving an unvaccinated 4-year-old who likely contracted the virus during international travel.
The child was at O'Hare International Airport's Terminal 5 on September 11 from 7:30 a.m. to 11 a.m.
Health officials are notifying potentially exposed individuals and advising them to check their vaccination status.
Measles symptoms, including rash, high fever, cough, and runny nose, can appear up to 21 days after exposure.
The MMR vaccine is 97% effective and can be given after exposure; free vaccines are available through the Cook County Department of Public Health.